Coke-oven door



WIE. ROBERTS.

COKE OVEN DOOR.

APPLICATION FILED AUG.28, I9I9.

Patented Oct. 25, 1921.

2 SHEETS-SHEET I- INVENTOR Willa/m 13. 713176443 MML Tiql.

A TTORNEY W. E. ROBERTS.

COKE OVEN DOOR.

APPLICATION FILED AUG.28. 1919.

Patented Oct. 25, 1921.

2 SHEETS-SHEET 2.

INVENTOH lg TFM W Arm/Mr I M II WI ,ta

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UNITED sTA Es PATENT OFFICE.

WILLIAM E. ROBERTS, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO FOUNDATION OVEN CORPORATION, OF NET/V YORK, N. Y., A CORPORATION OF NEW YORK.

COKE-OVEN DOOR.

Application filed August 28, 1919.

T 0 all whom it may concern:

Be it known that I, IVILLIAM E. Ronnnrs, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Coke-Oven Doors, of which the following is a specification.

My invention aims to provide an improved door for by-product coke ovens having certain points of novelty and advantage described in detail hereinafter.

The accompanying drawings illustrate embodiments of the invention.

Figure l is an outside face view of a door for the pusher side of the oven;

Figs. 2, 3 and 4 are sections of the same p n the correspondingly numbered lines of F ig. 5 is a section, similar to Fig. 4, showing the upper part of a door for the coke side of the oven; that is, the exit side;

Fig. 6 is a sectional view of a detail.

Referring to the drawings, Figs. 2 and 3 show the walls A between which is a coking chamber B and Fig. 4 shows the roof C, the underside of which forms the ceiling of the coking chamber, and the bottom D which forms the floor thereof The door of the chamber is composed of a framework or structure of steel or iron faced on the inside with refractory bricks to receive the contact of the hot coal. The door is a long narrow structure and is sub jected to considerable warping strains by reason of the high temperature within the oven, and difliculty has been found in making a door which would provide a close fit against the wall of the oven and would not break or warp through the temperature strains involved in use.

The principal difiiculty, I believe, is due to the fact that the inner part of the framework has been exposed to a much higher temperature than the outer part, so that the expansion of these parts has been unequal and the consequent strains have resulted in breakage and warping. I propose to make the part of the metal framework which is exposed to the higher temperature expansible independently of the other part or parts so as to avoid these conflicting strains.

The principal parts of the framework are the outer part E which I call the door frame since I have designed it to make close contact around the edges of the opening, the

Specification of Letters Patent.

Patented Oct. 25, 1921. Serial No. 320,346.

inner part F which I call the brick frame since its chief function is to support the brick lining which bears against the coal, these two parts being preferably of cast iron, and an intermediate steel plate G.

The door frame E comprises a plate portion F which bears against the face of the oven as shown in Fig. 2 and rests on the floor thereof as shown in Fig. 4, this plate having a substantially open central portion with connecting members H at intervals in its height and having a flange. J extending around its outer edge. The cover plate G is a thin, more or less elastic, flat plate fitting the inner face of the portion of the door frame which lies within the opening of the oven, as shown in Fig. 2. The brick frame is made in a number of sections, each slightly less in width than the opening of the oven and of such length that when assembled with a slight space between their ends they cover practically the length of the door frame; the brick frame having a flat portion K bearing against the cover plate G and having openings for the sake of lightness, and flanges L extending along the sides (and across the top and bottom of the uppermost and lowermost sections respectively). The side flanges L converge slightly toward each other so as to embrace the brick lining. The framework is assembled by means of bolts M which pass through slightly larger openings in the door frame, brick frame and cover plate respectively; see for example Fig. 6, which is a section on an enlarged scale through one of the bolt holes. For example, using three-quarter inch bolts, the holes cored in the door frame and brick frame may be one inch and the holes in the cover plate seven-eighths of an inch. With this mode of connection the brick frame can expand independently of the door frame, each of the sections of the brick frame expanding separately. In fact each of the three members of the framework can expand or contract separately of the others within the limits required by practical conditions. The allowance for expansion may be increased or reduced as circumstances require. The refractory bricks are set within the flanges K of the brick frame. Each horizontal course may consist, as indicated in Fig. 2, of side bricks N having flared tongues engaging the flanges of the frame and a key brick O which is introduced between the side bricks to hold them in engagement with the frame.

The attachment for handling the door may be of any usual or suitable design. For example, I have shown a door hook P, guide Q and latches R carried directly on the door frame, the latter cooperating with flanged plates S mounted on the uprights T which are used to brace the brick work of the oven.

It is customary to provide a small leveler door opening through the upper end of each of the doors on the pusher-side of the oven, through which a tool may be inserted to level the charge of coal. I provide for such a levelerdoor U in Fig. 4. It is mounted on an open frame V which is bolted to flanges on the top of the main framework of the door and carries at one side hinge pins WV (Fig. 3) passing through elongated openings in a latch X which is guided by a bar Y carried by the door and the end of which can be dropped into a hook Z mounted on the opposite side of the frame U. Where the leveler door is not needed, as generally on the coke side of the oven, the framework previously described is continued uninterruptedly to the top as in Fig. 5.

'The making of the oven door in the three parts described, namely the brick frame, the

door frame and the cover plate and then uniting these parts also has advantages in economy and perfection of manufacture as compared with the common scheme of mak ing the entire framework in one casting.

Though I have described with great particularity of detail a specific embodiment of my invention, yet it is not to be understood therefrom that the invention is restricted to the particular parts, proportions and arrangement described. Various modifications thereof may be made without depar ture from the invention as defined in the following claims.

What I claim is:

1. A coke oven door comprising an inner cast frame having inwardly converging flanges, a refractory lining comprising side bricks formed to engage said converging flanges and key bricks to hold said side bricks in engagement with said flanges, an intermediate plate, an outer cast frame'and means for permanently securing the several parts together and yet permit independent expansion and contraction of the separate parts.

2. A coke oven door comprising an inner cast frame having inwardly converging flanges, a refractory lining comprising side bricks formed to engage said converging flanges and key bricks to hold said side bricks in engagement with said flanges, an intermediate thin sheet metal plate, an outer cast frame having an outwardly extending mar-,

ginal flange exposed to and adapted to radiate its heat to atmosphere, the cast frames and intermediate plate being secured together by bolts which pass through holes of considerably greater diameter than their shanks so as to permit of independent expansion and contraction of the several parts.

3. A coke oven door comprising an inner case. frame having inwardly converging flanges, a refractory lining comprising side bricks formed to engage said converging flanges and key bricks to hold said side bricks in engagement with said flanges, an intermediate thin sheet metal plate, an outer cast frame having an outwardlyextending marginal flange exposed to and adapted to radiate its heat to atmosphere, the cast frames and intermediate plate being secured together by bolts which pass through holes of considerably greater diameter than their 7 shanks so as to permit of independent expansion and contraction of the several parts, means carried by said outer frame. for handling the door and lugs cast onsaid outer frame forming part of the locking means for the door. V

In witness whereof, have hereunto signed my name.

WILLIAM E. ROBERTS 

